ARM: imx: vining2000: Enable DDR DRAM calibration

Enable DRAM calibration in SPL to improve behavior of the board
in edge conditions of the thermal envelope of the board and make
it even more stable.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Silvio Fricke <silvio.fricke@softing.com>
Cc: Stefano Babic <sbabic@denx.de>

diff --git a/board/softing/vining_2000/vining_2000.c b/board/softing/vining_2000/vining_2000.c
index 9ac17f7..c6aee4e 100644 (file)
--- a/board/softing/vining_2000/vining_2000.c
+++ b/board/softing/vining_2000/vining_2000.c
@@ -587,6 +587,11 @@ static void vining2000_spl_dram_init(void)
 
        mx6sx_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
        mx6_dram_cfg(&sysinfo, &mx6_mmcd_calib, &mem_ddr);
+
+       /* Perform DDR DRAM calibration */
+       udelay(100);
+       mmdc_do_write_level_calibration(&sysinfo);
+       mmdc_do_dqs_calibration(&sysinfo);
 }
 
 void board_init_f(ulong dummy)

diff --git a/configs/vining_2000_defconfig b/configs/vining_2000_defconfig
index 4f9f538..512c15b 100644 (file)
--- a/configs/vining_2000_defconfig
+++ b/configs/vining_2000_defconfig
@@ -5,6 +5,7 @@ CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_MX6_DDRCAL=y
 CONFIG_TARGET_SOFTING_VINING_2000=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y